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dkim=pass header.d=citrix.com header.s=securemail header.b=WQAKGCKW; dkim=pass header.d=citrix.onmicrosoft.com header.s=selector2-citrix-onmicrosoft-com header.b=PQEPVq87; arc=pass ("microsoft.com:s=arcselector9901:i=1"); dmarc=pass (policy=reject) header.from=citrix.com; spf=pass (mx1.freebsd.org: domain of "prvs=1504b46c8=roger.pau@citrix.com" designates 216.71.155.144 as permitted sender) smtp.mailfrom="prvs=1504b46c8=roger.pau@citrix.com" X-Spamd-Result: default: False [-6.20 / 15.00]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+exists:216.71.155.144.spf.hc3370-68.iphmx.com]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[citrix.com:+,citrix.onmicrosoft.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[citrix.com,reject]; RCVD_IN_DNSWL_MED(-0.20)[216.71.155.144:from]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:16417, ipnet:216.71.154.0/23, country:US]; FROM_NEQ_ENVFROM(0.00)[roger.pau@citrix.com,prvs=1504b46c8=roger.pau@citrix.com]; ARC_ALLOW(-1.00)[microsoft.com:s=arcselector9901:i=1]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[citrix.com:s=securemail,citrix.onmicrosoft.com:s=selector2-citrix-onmicrosoft-com]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; FORGED_SENDER_VERP_SRS(0.00)[]; DWL_DNSWL_LOW(-1.00)[citrix.com:dkim]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MLMMJ_DEST(0.00)[freebsd-xen]; MID_RHS_NOT_FQDN(0.50)[] X-ThisMailContainsUnwantedMimeParts: N On Mon, Jun 06, 2022 at 11:18:09PM -0700, Brian Buhrow wrote: > hello. Following up on my recent post, here is the log of the failed shutdown from > FreeBSD head. > This probably doesn't tell you everything, but hopefully it will give you a clue. > > -thanks > -Brian > > > Jun 6 10:25:34 xen-lothlorien shutdown[1582]: reboot by buhrow: > Stopping sshd. > Waiting for PIDS: 1292. > Stopping cron. > Waiting for PIDS: 1276. > Stopping devd. > Waiting for PIDS: 537. > Writing entropy file: . > Writing early boot entropy file: . > Terminated > . > Jun 6 10:25:34 xen-lothlorien syslogd: exiting on signal 15 > Waiting (max 60 seconds) for system process `vnlru' to stop... done > Waiting (max 60 seconds) for system process `syncer' to stop... > Syncing disks, vnodes remaining... 2 3 2 1 0 done > All buffers synced. > Uptime: 39m13s > GEOM_MIRROR^Oyk^[ce gptback: provider destroyed. > GEOM_MIRROR: Device gptswap: provider destroyed. > GEOM_MIRROR: Device gptswap destroyed. > GEOM_MIRROR: Device gptroot: provider destroyed. > GEOM_MIRROR: Device gptroot destroyed. > uhub4: detached > uhub0: detached > uhub2: detached > uhub3: detached > uhub1: detached > > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x188 > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff82cafe74 > stack pointer ^O^R = 0x28:0xfffffe00d18a9bb0 > yk^[y nter = 0x28:0xfffffe00d18a9bb0 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 0 (xbbd0 taskq) > trap number = 12 > panic: page fault > cpuid = 0 > time = 1654536343 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00d18a9970 > vpanic() at vpanic+0x151/frame 0xfffffe00d18a99c0 > panic() at panic+0x43/frame 0xfffffe00d18a9a20 > trap_fatal() at trap_fatal+0x387/frame 0xfffffe00d18a9a80 > trap_pfault() at trap_pfault+0xab/frame 0xfffffe00d18a9ae0 > calltrap() at calltrap+0x8/frame 0xfffffe00d18a9ae0 > --- trap 0xc, rip = 0xffffffff82cafe74, rsp = 0xfffffe00d18a9bb0, rbp = 0xfffffe00d18a9bb0 --- > dmu_objset_zil() at dmu_objset_zil+0x4/frame 0xfffffe00d18a9bb0 > zil_open() at zil_open+0xf/frame 0xfffffe00d18a9bd0 > > l_ensure_zilog() at zvol_ensure_zilog+0xf1/frame 0xfffffe00d18a9bf0 > zvol_geom_bio_strategy() at zvol_geom_bio_strategy+0x90/frame 0xfffffe00d18a9c70 > xbb_dispatch_dev() at xbb_dispatch_dev+0x274/frame 0xfffffe00d18a9d20 > xbb_run_queue() at xbb_run_queue+0xbf5/frame 0xfffffe00d18a9e40 This seems to be caused by a stale blkback thread that's still active after the underlying device has been shut down. Can you provide a bit more information about how to reproduce the issue? I assume you are shutting down with at least a guest still active and doing IO? Which command are you using to reboot the system? Thanks, Roger.